Bluetooth version: 4.1 version
Transmission distance: the direct distance outside is 10-15 meters
Battery capacity: polymer lithium battery 55mAh
Listen to music time: 2.5 hours up and down/pause playback
Talk time: 2 hours
Standby time: 130 hours
Charging time: 1-2 hours
Working current: 22MA
Standby current: 4uA
Bluetooth class : class2 and class3
Band/band: 2.4-2.485ghz
Modulation process: GFSK
Maximum transmission power: +2DBm